SecureSettings

1.0

Write-PowerShellHashtable.ps1

function Write-PowerShellHashtable {
    <#
    .Synopsis
        Takes an creates a script to recreate a hashtable
    .Description
        Allows you to take a hashtable and create a hashtable you would embed into a script.
         
        Handles nested hashtables and indents nested hashtables automatically.
    .Parameter inputObject
        The hashtable to turn into a script
    .Parameter scriptBlock
        Determines if a string or a scriptblock is returned
    .Example
        # Corrects the presentation of a PowerShell hashtable
        @{Foo='Bar';Baz='Bing';Boo=@{Bam='Blang'}} | Write-PowerShellHashtable
    .Outputs
        [string]
    .Outputs
        [ScriptBlock]
    .Link
        about_hash_tables
    #>    
    [OutputType([string], [ScriptBlock])]
    param(
    [Parameter(Position=0,ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true)]
    [PSObject]
    $InputObject,

    # Returns the content as a script block, rather than a string
    [Alias('ScriptBlock')]
    [switch]$AsScriptBlock,

    [Switch]$Sort
    )

    process {
        $callstack = @(foreach ($_ in (Get-PSCallStack)) {
            if ($_.Command -eq "Write-PowerShellHashtable") {
                $_
            }
        })
        $depth = $callStack.Count
        if ($inputObject -isnot [Hashtable]) {
            
            $newInputObject = @{
                PSTypeName=@($inputobject.pstypenames)[-1]
            }
            foreach ($prop in $inputObject.psobject.properties) {                
                $newInputObject[$prop.Name] = $prop.Value
            }
            $inputObject = $newInputObject
        }
        
        if ($inputObject -is [Hashtable]) {
            #region Indent
            $scriptString = ""
            $indent = $depth * 4        
            $scriptString+= "@{
"
            #endregion Indent
            #region Include
            $items = $inputObject.GetEnumerator()

            if ($Sort) {
                $items = $items | Sort-Object Key
            }
            

            foreach ($kv in $items) {
                $scriptString+=" " * $indent
                
                $keyString = "$($kv.Key)"
                if ($keyString.IndexOfAny(" _.#-+:;()'!?^@#$%&".ToCharArray()) -ne -1) {
                    if ($keyString.IndexOf("'") -ne -1) {
                        $scriptString+="'$($keyString.Replace("'","''"))'="
                    } else {
                        $scriptString+="'$keyString'="
                    }                    
                } elseif ($keyString) {
                    $scriptString+="$keyString="
                }
                                
                
                
                $value = $kv.Value
                # Write-Verbose "$value"
                if ($value -is [string]) {
                
                    $value = "'"  + $value.Replace("'","''").Replace("’", "’’").Replace("‘", "‘‘") + "'"
                } elseif ($value -is [ScriptBlock]) {
                    $value = "{$value}"
                } elseif ($value -is [switch]) {
                    $value = if ($value) { '$true'} else { '$false' }
                } elseif ($value -is [bool]) {
                    $value = if ($value) { '$true'} else { '$false' }
                } elseif ($value -and $value.GetType -and ($value.GetType().IsArray -or $value -is [Collections.IList])) {
                    $value = foreach ($v in $value) {
                        if ($v -is [Hashtable]) {
                            Write-PowerShellHashtable $v
                        } elseif ($v -is [Object] -and $v -isnot [string]) {
                            Write-PowerShellHashtable $v
                        } else {
                            ("'"  + "$v".Replace("'","''").Replace("’", "’’").Replace("‘", "‘‘") + "'")
                        }
                    }
                    $oldOfs = $ofs 
                    $ofs = ",
$(' ' * ($indent + 4))"
                    $value = "$value"
                    $ofs = $oldOfs
                } elseif ($value -as [Hashtable[]]) {
                    $value = foreach ($v in $value) {
                        Write-PowerShellHashtable $v
                    }
                    $value = $value -join ","
                } elseif ($value -is [Hashtable]) {
                    $value = "$(Write-PowerShellHashtable $value)"
                } elseif ($value -as [Double]) {
                    $value = "$value"
                } else {
                    $valueString = "'$value'" 
                    if ($valueString[0] -eq "'" -and 
                        $valueString[1] -eq "@" -and 
                        $valueString[2] -eq "{") {
                        $value = Write-PowerShellHashtable -InputObject $value                    
                    } else {
                        $value = $valueString
                    }
                    
                }                                
               $scriptString+="$value
"
            }
            $scriptString += " " * ($depth - 1) * 4          
            $scriptString += "}"     
            if ($AsScriptBlock) {
                [ScriptBlock]::Create($scriptString)
            } else {
                $scriptString
            }
            #endregion Include
        }          
   }
}